Multiple glass sash



June 11, 19.46. C. M; VERHAGEN 2,402,105

y MULTIPLE GLASS SASH Filed March 8, 1943 f f f 1/ f f f f f f f i r`Ver/zagen,

l @Mig/mdf Patented .lune ll, 19461 l MULTIPLE GLASS Sasa Christian M.Verhagen, Elkhart, Ind., assignor to The Adlake Company, Chicago, Ill.,a corporation of Illinois Application March 8, 15.!43, Serial No.478,327

7 Claims. l

(Cl. 2li- 565) glass sash of the type commonly used in the Windowopenings of air conditioned railway cars, buses and other vehicles.

The main purpose of the invention is to provide, in a double glass sash,an improved rail structure which has exceptionally low heatlconductivity between its inner and outer faces, is quite inexpensive tomanufacture, can be fabri cated advantageously from sheet steel, isstrong and durable, and can be taken apart easily for re-glazing.

Other more specific objects and advantages of the invention will beapparent to those skilled in the art upon a full understanding of thenovel rail structure.

While the features which constitute the invention are especially wellsuited for incorporation in the rails of sash employing two panes ofglass, such features are also applicable to the rails of sash employingmore than two panes of glass.

Oneform of the invention is presented herein by way of illustration, butit will of course be appreciated that the invention is susceptible ofbeing embodied in other structurally modied forms coming equally withinthe scope of the appended claims.

In the accompanying drawing:

Fig. 1 is a'horizontal section through a doubleV glass sash having railsconstructed in accordance with the invention;

Fig. 2 is a perspective view of one of the corners of the sash;

Fig. 3 isa separated perspective view of the several parts of the rail,showing fragmentary secions cf the parts in unassembled condition; an

Fig. 4 is a fragmentary section, corresponding to a portion of Fig. 1,showing a minor modiiication in the insulation of the fastening screws.

The sash shown in the drawing is characterized by two panes of glass l@and Ii and a rectangular -supporting frame I2. As all four rails of theframe I2 may advantageously be of the same construction a description ofone of the rails, namely the side rail I3, will be suilicient for thepurpose of this disclosure.

I'he rail i3 includes two metal channel members I4 and I 5, each ofwhich opens inwardly toward the glazing area of the sash and is providedat one side with a relatively narrow ange IS and at the other side witha relatively wide flange I1. The channel members are preferably made ofsheet steel, but may of course be made of any other material possessingthe requisite strength and rigidity.

A non-metallic insulating strip I8 of hard liber, laminated fabric,synthetic resin, or other suitable compositiomis positioned between thechannel members I4 and I5, in engagement with the narrow iianges I6ofthe latter. The inwardly projecting portions I9 of the wide flanges I1of the channel members form between the same a glazing groove 20.

A resiliently compressible glazing strip 2l of rubber or other suitablematerial is positioned in the groove 20 in sealed engagement with theedges of the panes I0 and II. The glazing strip acts to position thepanes in spaced parallel relation to each other. While the glazing stripis shown as being formed in a single piece, it may of course beconstructed in two or more structurally separated pieces. y

The channel members I4 and I5 are clamped together on the interposedinsulating strip I8 by a plurality of screws 22, which screws passthrough both flanges of the channel member I4 and the insulating stripI8 and are threaded into the narrow flange only of the channel memberI5. The screws 22 serve to clamp the channel members I4 and I5 tightlyagainst the insulating strip I8, with the glazing strip 2lresilientlycompressed between the inwardly projecting portions I9 of thewide anges I 1 by the' action of the screws.

The channel members Id and I5 are preferably duplicates of each other,and the insulating strip I8 is preferably of about the same thickness aseach of the channel members. The insulating strip I 8 is preferablyarranged with its outer and inner edges substantially flush with thecorre- `sponding edges of the narrow iianges I6 of the channel members.

The spacing of the flanges I8 and II provides air pockets 23 in thechannel members, which air pockets open inwardly and are in directcommunication with the groove 2li in which the glazing strip 2| 'ispositioned.

The above described construction results in a sash rail of exceptionallylow heat conductivity between its inner and outer faces 2t andV 25respectively. The fastening screws 22-which form the only directmetallic connections between the interior and exterior channel membersI4 and l-terminate short of the exposed anges I7 of the exterior channelmember, within the moderating air space 23 of that channel member, withthe result that the few metallic paths of conmembers i5 similarlyconnected together, and

all of the insulating strips i8 mintered or otherwise cut at their endsfor right angular abutment with each other. The glazing strip 2| ispreferably continuous, being stretched like a rubber band about theedges ofthe panes. `If desired, the insulating air spaces 23 between theilanges I6 and l1 may be filled with some additional insulating materialof any suitable character, but this is not at all necessary as the ,airin such spaces provides good insulation.

I claim:

1. In a multiple glass sash, a frame characterized by a single inwardlyopening glazing groove for the reception of two or more panes of glass,saidframe comprising a. pair of laterally spaced metal channel members,each of which members opens inwardly toward the glazing area of the sashand is provided at the side adjacent the other memberwith a relativelynarrow inwardly directed flange and at the side farthest removed fromlthe other member with a relatively wide inwardly directed flange, anon-metallic insulating strip positioned between the channel membersinengagement with the narrow flanges of the latter, the inwardlyprojecting portions oi the wide flanges of the channel members formingbetween the same the aforesaid single inwardly opening glazing groovefor the reception of two or'more panes of glass, a resilientlycompressible glazing means positioned insaid groove, two or more panesof glass mounted in and separated by the glazing means, and means forclamping the channel members against the insulating means, with theglazing means resiliently compressed between the inwardly projectingportions of the wideilanges by the action of said.

clamping means. l

2. In a multiple glass sash, a frame characterized by a single inwardlyopening glazing groove for the reception of two or more panes ofglass,..

said frame comprising a pair of laterally spaced metal channel members,each of which members opens inwardly toward the glazing area of the sashand is provided at the side adjacent the other member with a relativelynarrow inwardly directed flange and at the side farthest rem'oved fromthe other member with a relatively wide inwardly directed flange, anon-metallic insulating strip positioned between the channel members inengagement with the narrow flanges of the latter, the inwardlyprojecting portions of the wide anges of the channel members formingbetween the same the aforesaid single inwardly opening glazing groovefor the reception of two or more panes of glass, a resilientlycompressible glazing strip positioned in said groove, two or more panesof glass mounted in and separated by the glazing strip, and means forclamping the channel members against the insulating strip, withr theglazing strip resiliently compressed between the inwardly projectinglportions of the wide anges by the action of said clamping means,

4 said channel members being of approximately the same over-allthickness, and said insulating strip being of approximately the samethickness as each of the channel members and being arranged with itsouter and inner edges substantially ush with the corresponding edges ofthe narrow flanges of the channel members.

3. In a. multiple glass sash, a frame characterized by a single inwardlyopening glazing groove for the reception of two or more panes of glass,said frame comprising a pair of laterally spaced metal channel members,each of which members opens inwardly toward the glazing area of the sashand is provided at the side adjacent the other member with a relativelynarrow inwardly directed flange and at the side farthest removed from.the other member with a relatively wide inwardly directed flange, anon-metallic insulating strip positioned between the channel members inengagement with the narrow ilanges of the latter, the inwardlyprojecting portions of the wide anges of the channel members formingbetween the same the aforesaid single inwardly opening glazing groovefor the reception of two or more panes of glass, which groove is locatedinwardly of the narrow flanges and insulating strip in communicationwith the spaces present 'between the narrow and wide anges, aresiliently compressible glazing strip positioned in said groove, two ormore panes of glass mounted in and separated by the glazing strip, andmeans for clamping the channel members against the insulating strip,with the glazing strip resiliently compressed between the inwardlyprojecting portions of the wide flanges by the action of said clampingmeans.

4. In a multiple glass sash, a frame characterized by a single inwardlyopening glazing groove for the reception of two or more panes of glass,said frame comprising a pair of laterally spaced metal channel members,each of which members opens inwardly toward the glazing area of the sashand is provided at the side adjacent the other member with a relativelynarrow inwardly .directed flange and at the side farthest removed fromthe other member with a relatively wide inwardly directed flange, anon-metallic insulating strip positioned between the channel members inengagement with the narrow anges of lthe latter, the inwardly projectingportions of the wide flanges of the channel members forming between thesame the aforesaid single inwardly opening glazing groove for thereception of two or more panes of glass, a resiliently compressibleglazing strip positioned in said groove, two or more panes of glassmounted in and separated by the glazing strip, and means for clampingthe channel members against the insulating strip, with the glazing stripresiliently compressed between the inwardly projecting portions of thewide anges by the action of said clamping means, said clamping meansacting directly against the wide flange on one channel member and thenarrow `flange on the other channel member.

- 5. In a multiple glass sash, a frame characterized by a singleinwardly opening glazing groove for the reception of two or more panesof glass,

' said frame comprising a. pair of laterally spaced sulating strippositioned between the channel members in engagement with the narrowflanges of the latter, the inwardly projecting portions of the wideflanges of the channel members form-y ing between the same the aforesaidsingle ine wardly opening glazing groove for the reception of two or.morepanes of glass, a resiliently oompressible glazing strip positionedin said groove, two or more panes of glass mounted in and sep arated bythe glazing strip, and means for clamping the channel members againstthe insulating strip, with the glazing strip reslliently compressedbetween the inwardly projecting portions of the wide flanges by theaction of said clamping means, said clamping means acting directlyagainst the wide flange on one channel member and the narrow flange onthe other channel member, said clamping means consisting of screws whichpass through both flanges of one channel member and the insulating stripand are threaded into the narrow flange of the other channel member.

6. In a multiple glass sash, a pair of complementary metal rail members,each of which is shaped to provide a longitudinally extending air spacewhich opens inwardly toward the'V glazing area of the sash, anon-metallic insulating strip positioned between the rail membersopposite the air spaces therein, said rail members having inwardlyextending portions which form between the same inwardly ci' theinsulating strip a single glazing groove in open communication with theair spaces, resiliently comprsible glazing means within the groove, twoor more panes o1' glass mounted in and separated by the glazing means,and means vfor clamping the rail members against the insulating strip,with the glazing meansresiliently compressed between the inwardlyextending portions oi said rail members.

'1. In a self-contained multiple glass sash for insertion as a unit in awindow opening, a pair of one-piece complementary metal rail members, atleast one of which is shaped in the formo! an integral channel toprovide a longitudinally extending air space which opens inwardly towardthe glazing area of the sash, a non-metallic insulating strip positionedbetween the rail members opposite said air space, said rail membershaving inwardly extending portions which form between the same inwardlyof the insulating strip a single glazing groove in open communicationwith the air space, resiliently compressible glazlng means within thegroove, two or more panes of glass mounted in and separated by theglazing means, and means for clamping the rail membe against theinsulating strip.

CImlSTIAN M. VERHAGEN.

